I think the signal of my XDA is more stable with RSU 3.23.01
My XDA always won't reconnect the network in a short period when I go a place without signal for a longtime, then go to a place with good signal. Sometimes the phone detected the signal, but It cannot recieve / dial any call. I have to switch off and turn on the phone part. I use O2 RSU 4.16 version when I got this problem.
After I upgraded the RUU to Qtek 3.16.53, then upgrade the RSU to 3.23.01, this problem seems not happen again.
Is that only my case or anyone feel this improvement too?